Main.cc: In function 'int main()':
Main.cc:19:11: error: no match for 'operator=' (operand types are 'std::basic_ostream' and 'int')
cout<& std::basic_ostream<_CharT, _Traits>::operator=(std::basic_ostream<_CharT, _Traits>&&) [with _CharT = char; _Traits = std::char_traits]
operator=(basic_ostream&& __rhs)
^
/usr/include/c++/5/ostream:402:7: note: no known conversion for argument 1 from 'int' to 'std::basic_ostream&&'